WO2005121210A1 - 芳香族ポリカーボネートの改良された製造方法 - Google Patents
芳香族ポリカーボネートの改良された製造方法 Download PDFInfo
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- WO2005121210A1 WO2005121210A1 PCT/JP2005/010841 JP2005010841W WO2005121210A1 WO 2005121210 A1 WO2005121210 A1 WO 2005121210A1 JP 2005010841 W JP2005010841 W JP 2005010841W WO 2005121210 A1 WO2005121210 A1 WO 2005121210A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/30—General preparatory processes using carbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/04—Aromatic polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/205—General preparatory processes characterised by the apparatus used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/30—General preparatory processes using carbonates
- C08G64/307—General preparatory processes using carbonates and phenols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/18—Details relating to the spatial orientation of the reactor
- B01J2219/185—Details relating to the spatial orientation of the reactor vertical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/19—Details relating to the geometry of the reactor
- B01J2219/194—Details relating to the geometry of the reactor round
- B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
- B01J2219/1946—Details relating to the geometry of the reactor round circular or disk-shaped conical
Definitions
- the present invention relates to a method for producing an aromatic polycarbonate. More specifically, the present invention
- the method of the present invention By the method of the present invention, high-quality and high-performance aromatic polycarbonates having no coloring and excellent mechanical properties can be produced at an output of 1 ton or more per hour for a long period (for example, 5,000 hours). For a long period of time) and can be produced stably without variation in molecular weight. Therefore, the method of the present invention is very advantageously used for industrial production of aromatic polycarbonate.
- aromatic polycarbonates have been widely used in many fields as engineering plastics having excellent heat resistance, impact resistance, transparency, and the like.
- Various studies have hitherto been made on the method for producing the aromatic polycarbonate, and among them, an aromatic dihydroxy compound such as 2,2-bis (4-hydroxyphenyl) propane (hereinafter referred to as bisphenol A and bisphenol A) has been studied.
- bisphenol A and bisphenol A 2,2-bis (4-hydroxyphenyl) propane
- phosgene are being industrialized by the interfacial polycondensation method (so-called “phosgene method”).
- an aromatic polycarbonate for example, an aromatic dihydroxy conjugate (for example, bisphenol A) and diaryl carbonate are used.
- an aromatic dihydroxy conjugate for example, bisphenol A
- diaryl carbonate There has been known a melting method in which transesterification is performed in the molten state with, for example, diphenyl carbonate, and the resulting aromatic monohydroxy compound (eg, phenol) is extracted and polymerized.
- the melting method has advantages such as not using a solvent, but has the following problems.
- a large-scale vertical stirred tank type polymerization vessel usually has a liquid capacity with respect to an evaporation area. Is greater than that of the scale, and the so-called liquid depth becomes large. For this reason, even if the degree of vacuum is increased in order to increase the degree of polymerization, the lower part of the stirring tank has a liquid depth, so that the polymerization is performed at a higher pressure than the upper space part. However, it is difficult to efficiently extract aromatic monohydroxy conjugates (for example, phenol). Therefore, a large-scale vertical stirred tank type polymerization vessel cannot be used only for producing a prepolymer having a low degree of polymerization. In order to achieve the required degree of polymerization, it is essential to use a prepolymerizer and a polymerization vessel for promoting the polycondensation reaction.
- JP-B-53-5718 (corresponding to U.S. Pat. No. 3,888,826) and a method using a combination of a centrifugal thin-film evaporator and a horizontal twin-screw polymerization reactor (Japanese Patent Application Laid-Open No. No. 153923) is known.
- the mechanical stirring In the method used the reaction is carried out at a high temperature of around 300 ° C, so that the resulting polymer is liable to be colored or deteriorated in physical properties. Coloring of the polymer and deterioration of physical properties are also likely to occur. Therefore, there are still many problems to be solved in order to stably produce high-quality polycarbonate for a long time by a method using mechanical stirring.
- the present inventors have developed a method using a guide contact falling type polymerization apparatus in which a molten pre-bolimer is polymerized while dropping by its own weight along a guide such as a wire without performing mechanical stirring. He found that these issues could be completely solved and filed an application first. (For example, JP 08-225641, JP 08-225643, JP 08-325373, WO 97/22650, JP 10-81741. JP-A-10-298279, WO 99/36457, and WO 99Z64492).
- the problem to be solved by the present invention is to obtain a high-quality, high-quality, high-colored and excellent mechanical physical property from a molten prepolymer of an aromatic polycarbonate obtained by reacting an aromatic dihydroxy compound with diaryl carbonate. It is an object of the present invention to provide a specific method capable of producing a high-performance aromatic polycarbonate stably at an industrial scale of 1 ton or more per hour with a small variation in molecular weight for a long period of time.
- FIG. 2 A preferred example of a guide contact-flow polymerization apparatus, in which the upper part defined by the upper peripheral side wall of the casing is cylindrical, and the tapered lower part defined by the lower peripheral wall of the casing is an inverted circle. It is the schematic of the polymerization apparatus which is a fiber type. It shows a method for measuring the inner diameter D and length L of the cylindrical upper side wall of the casing of the polymerization apparatus, the inner diameter d of the outlet, and the length h of the guide.
- a method for producing an aromatic polycarbonate comprising the following steps (I) and (II):
- a molten pre-polymer feed port a molten pre-polymer feed zone located next to the feed port and communicating with the feed port, a polymerization reaction zone located next to the molten pre-polymer feed zone and communicated with the molten pre-polymer feed zone, and the polymerization
- a casing located next to the reaction zone and having an aromatic polycarbonate outlet communicating with the polymerization reaction zone, a vacuum device provided in connection with the polymerization reaction zone of the casing, and associated with the outlet of the casing; Discharge device provided as
- the polymerization reaction zone has a space and a guide fixed and extending downward therein, and the polymerization reaction zone is separated from the molten prepolymer feed zone by a distribution plate having a plurality of holes.
- the molten pre-polymer feed zone is in communication with the polymerization reaction zone through the plurality of holes in the plate;
- a method comprising:
- the casing In the polymerization reaction zone of the guide contact falling polymerization apparatus (a), the casing is inclined toward the upper part defined by the upper peripheral side wall and the discharge port, and the upper peripheral side wall force is continuous. And a tapered lower portion defined by a lower peripheral wall extending downwardly, the outlet being at the bottom of the tapered lower portion, whereby the manufactured aromatic polycarbonate falling from the guide is tapered. It flows down to the discharge port along the inner surface of the lower peripheral wall of the lower part of the mold,
- the opening area A (m 2 ) of the horizontal section of the upper part of the casing is represented by the following formula:
- the guide contact falling polymerization apparatus (a) has the following formula:
- A is as defined in the characteristic (1), and B represents the minimum opening area (m 2 ) of the cross section of the outlet.)
- Amount of aromatic polycarbonate produced is 1 ton or more per hour
- the upper part of the casing is cylindrical, the tapered lower part of the casing is inverted conical, the outlet is cylindrical, the inner diameter D (cm) and the length L ( cm), the inner diameter d (cm) of the discharge port, and the length h (cm) of the guide satisfy the following formula:
- At least one further guide contact falling polymerization device (b) having the properties (1) to (5) is connected to the guide contact falling polymerization device (a);
- the plurality of further guide contact falling polymerization devices (b) are connected in series, and the at least one further contact contact polymerization device (b) is connected in series.
- the steps (I) and ( ⁇ ) are performed in the guide contact-flow polymerization apparatus (b), whereby the aromatic polycarbonate produced in the guide contact-flow polymerization apparatus (a) is polymerized.
- An additional guide contact falling polymerization device (b) is connected to the guide contact falling polymerization device (a), and the external total surface area SI of the guide of the guide contact falling polymerization device (a) (m 2 ) and the external total surface area S 2 (m 2 ) of the guide of the further guide contact falling polymerization device (b), wherein the following formula ( 4 ) is satisfied,
- the content of a halogen atom is lOppb or less, and the content of at least one metal compound selected from the group consisting of an alkali metal compound and an alkaline earth metal compound is an alkali metal atom and an alkaline earth metal.
- the content of a halogen atom is 5 ppb or less, and the content of at least one metal compound selected from the group consisting of an alkali metal compound and an alkaline earth metal compound is an alkali metal atom and an alkaline earth metal.
- the content of a halogen atom is lppb or less, and the content of at least one metal compound selected from the group consisting of an alkali metal compound and an alkaline earth metal compound is an alkali metal atom and an alkaline earth metal. 0.01-1.lppm converted to total amount of atoms
- a plurality of aromatic polycarbonate main chains are included, and the plurality of aromatic polycarbonate main chains as a whole have at least one aromatic bond selected from the group consisting of ester bonds and ether bonds. bonded to the side chain, of the preceding paragraph 6-9, wherein the amount of said heterologous binding is 05 to 0.5 mol 0/0 0.5, relative to the carbonate bonds in the aromatic polycarbonate main chains of the plurality of An aromatic polycarbonate according to any of the above,
- the aromatic dihydroxy conjugate is a compound represented by the following formula.
- the divalent aromatic group Ar 2 represents a group such as a substituted or unsubstituted phenylene, a substituted or unsubstituted biphenylene, a substituted or unsubstituted pyridylene, and the like.
- the substituent here is as described above.
- the divalent alkane group Y is, for example, an organic group represented by the following formula.
- R 4 is each independently hydrogen, C 1 to C: LO alkyl group, C 1 to C 10 alkoxy group, C 5 to C 10 cycloalkyl group, C 5 to C 10 carbon ring
- k represents an integer of 3 to 11
- R 5 and R 6 are individually selected for each X, and independently represent hydrogen or an alkyl group having 1 to 6 carbon atoms, and X represents carbon.
- R 5 and R 6 other substituents such as a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and phenyl are used as long as one or more hydrogen atoms do not adversely affect the reaction. It may be substituted by a group, phenoxy group, bull group, cyano group, ester group, amide group, nitro group or the like. )
- Examples of such a divalent aromatic group Ar include those represented by the following formula.
- R 7 and R 8 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 0 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 ring carbon atoms
- Hue M and n are integers from 1 to 4; when m is 2 to 4, each R 7 may be the same or different, and when n is 2 to 4
- Each R 8 may be the same or different.
- divalent aromatic group Ar may be represented by the following formula.
- ⁇ Ar 2 is as described above, and Z is a single bond or —O—, —CO—, —S—, -SO
- R 1 is as described above.
- divalent aromatic group Ar examples include substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, and substituted or unsubstituted pyridylene.
- the aromatic dihydroxy compound used in the present invention may be a single kind or two or more kinds.
- a typical example of the aromatic dihydroxy conjugate is bisphenol A.
- a trivalent aromatic trihydroxy conjugate for introducing a branched structure may be used in combination within a range not to impair the object of the present invention.
- the diaryl carbonate used in the present invention is represented by the following formula.
- Ar 3 and Ar 4 each represent a monovalent aromatic group having 5 to 20 carbon atoms.
- Ar 3 and Ar 4 represent a monovalent carbocyclic or heterocyclic aromatic group, wherein one or more hydrogen atoms in Ar 3 or Ar are other substituents which do not adversely affect the reaction. For example, replacement with a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a phenyl group, a phenoxy group, a butyl group, a cyano group, an ester group, an amide group, a nitro group, etc. It may be done.
- Ar 4 may be the same or different.
- diaryl carbonate include substituted or unsubstituted diphenyl carbonates represented by the following formula.
- R 9 and R 1Q each independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a cycloalkyl having 5 to 10 ring carbon atoms
- p and q are integers of 1 to 5, and when p is 2 or more, each R 9 may be different, and when q is 2 or more, , Each R 1Q is different There may be.
- diaryl carbonates such as unsubstituted diphenyl carbonate, lower alkyl-substituted diphenyl carbonate such as ditolyl carbonate and di-tert-butyl carbonate, and the like. Is preferred, but diphenyl carbonate, which is a diaryl carbonate having the simplest structure, is particularly preferred.
- diaryl carbonates may be used alone or in combination of two or more.
- the use ratio (preparation ratio) of the aromatic dihydroxy conjugate and the diaryl carbonate depends on the types of the aromatic dihydroxy conjugate and the diaryl carbonate used, the polymerization temperature and other polymerization conditions.
- the diaryl carbonate is usually 0.9 to 2.5 monoles, preferably 0.95 to 2.0 monoles, more preferably 0.98 per 1 mono of the aromatic dihydroxy conjugate.
- ⁇ : L is used in a ratio of 5 mol.
- Such a molten prepolymer used as a polymerization raw material of the present invention may be obtained by any known method.
- the guide contact-flow polymerization apparatus used in the present invention is a polymerization apparatus for performing polymerization by melting and flowing down a prepolymer along a guide.
- a molten prevolumer supply port a molten prevolumer supply zone located next to the supply port and communicating with the supply port, the molten prevolumer located next to the molten prevolumer supply zone
- a casing having a polymerization reaction zone communicating with the supply zone, and an aromatic polycarbonate outlet located next to the polymerization reaction zone and communicating with the polymerization reaction zone;
- a vacuum device provided in connection with the polymerization reaction zone of the casing, and a discharge device provided in connection with the discharge port of the casing
- the polymerization reaction zone has a space and a guide fixed therein and extending downward, wherein the polymerization reaction zone is connected to the polymerization reaction zone by the molten prepolymer polymer supply zone.
- the polymerization vessel In order to stably produce high-quality and high-performance aromatic polycarbonate at an industrial scale of 1 ton or more per hour for a long period of time, the polymerization vessel must satisfy various conditions. Are required, and the present invention has found these conditions. More specifically, the guide contact falling polymerization apparatus (a) needs to have the following properties (1) to (5).
- the opening area A (m 2 ) of the cross section in the horizontal plane (a—a ′ plane) of the casing 10 forming the upper part of the polymerization reaction zone 5 is as follows: It is necessary to satisfy the following equation.
- A smaller than A is 0. 7m 2, and, Do can achieve production of interest, and, in order to achieve the production of Tsukko reduce the equipment cost, A is to 200 meters 2 below It is necessary.
- the A (m 2 ) and the minimum opening area B (m 2 ) of the cross section of the aromatic polycarbonate outlet 7 are Specific force It is necessary to satisfy the following formula.
- the angle C (°) between the upper peripheral side wall of the upper part of the casing and the inner peripheral surface of the lower peripheral wall of the tapered lower part is determined.
- the vertical section of the casing also needs to satisfy the following expression.
- the angle C is preferably as close to 90 ° as possible because the amount of the casing material used is small. Therefore, from the viewpoint of reducing the equipment cost, the angle C should be as close to 90 ° as possible. It is considered strong. However, in the present invention, if the melt viscosity is high without deteriorating the quality of the aromatic polycarbonate or the aromatic polycarbonate prepolymer having an increased degree of polymerization, which is dropped from the lower end of the guide, these melts are discharged. To move to 7, the angle C must be in the range 120-165 °.
- the polymerization apparatus used in the present invention may have a plurality of different angles (C). This occurs, for example, if the horizontal cross section of the upper part of the casing in the polymerization reaction zone is elliptical or if the tapered lower part of the casing is asymmetric. In such a case, the angle (C) measured at any place needs to be within the above range (120 to 165 °).
- the length h (cm) of the guide is T3
- total external surface area S1 is 2-5 to be described later, is not particularly limited so Re range near the OOOm 2 (i.e., for example, 1 to total external surface area S1 is 2, OOOm 2 guides Even if this guide is used, the total external surface area S1 may be set to 2, OOOm 2 by using a plurality of guides.
- a perforated plate or wire mesh having a length h may be used. Can be used such that the horizontal cross section is spiraled).
- the length of each guide must be in the range of 150-3, OOOcm.
- the lengths of the guides may not be the same, but it is preferable that the lengths be as close as possible to reduce variation in the molecular weight.
- the number of guides can be generally one to several million depending on the shape of the guides.
- the number of force guides depending on the desired degree of polymerization or production amount is usually 100 to 1,000,000, preferably Is from 200 to 50,000.
- the external total surface area S1 of the guide refers to the area of the entire surface of the guide (hereinafter simply referred to as the external surface) on which the molten pre-polymer contacts and flows down.
- the external total surface area S1 is determined by the pipe-shaped guide. This is the outer surface area and does not include the surface area of the inner surface of the pipe that does not allow the molten pre-polymer to flow down. If there are multiple guides, the total external surface area S1 means the sum of the areas of the external surfaces of all guides.
- a large amount of high-quality aromatic polycarbonate can be manufactured, and the inner wall and discharge port of the tapered lower part that satisfies the above characteristics (3) and (2) generate a large amount of material falling from the guide. It is presumed that this is because the discharge time of the aromatic polycarbonate can be shortened and the residence time before discharge can be shortened, so that coloring and deformation due to long-term residence will not occur.
- a more preferable range of the opening cross-sectional area A (m 2 ) of the horizontal cross section of the upper portion of the casing is 0.8 ⁇ A ⁇ 180, and further preferably 1 ⁇ A ⁇ 150.
- a more preferable range of the ratio of the A (m 2 ) to the minimum opening area B (m 2 ) of the cross section of the discharge port is 25 ⁇ A / B ⁇ 900, more preferably. Is 30 ⁇ A / B ⁇ 80 It is 0.
- a more preferable range of the angle C (°) between the upper peripheral wall of the upper portion of the casing and the inner peripheral surface of the lower peripheral wall of the tapered lower portion is 125 ⁇ C ⁇ 160, more preferably. Is 135 ⁇ C ⁇ 155.
- the length h (cm) of the guide depends on factors such as the degree of polymerization of the raw material prepolymer, the polymerization temperature, the pressure, the degree of polymerization of the aromatic polycarbonate or prepolymer to be produced by the polymerizer, and the production amount.
- a more preferable range is 200 ⁇ h ⁇ 2800 (however, if there are multiple guides, the length of all guides is within this range), and more preferably, 250 ⁇ h ⁇ 2 ⁇ h ⁇ 2800.
- h ⁇ 2500 (however, if there are multiple guides, the length of all guides is in this range).
- the required external total surface area SI (m 2 ) of the entire guide also varies depending on the same factors as described above.
- a more preferable range is 4 ⁇ S1 ⁇ 4500, and more preferably, , 9 ⁇ S1 ⁇ 4000.
- the case of the polymerization reaction zone may be any as long as it can withstand it.
- the shape of the opening of the upper horizontal section of the casing may be any shape such as a polygon, an ellipse, and a circle. Preferably, it has a circular shape or a shape close thereto. Further, the opening in the horizontal cross section at the upper part of the casing may be different in shape and cross sectional area from the upper part to the lower part, or may be the same. From the viewpoint of the production of the polymerization apparatus, the same one is preferable.
- the upper part of the casing in the polymerization reaction zone of the present invention is preferably cylindrical.
- the tapered lower portion of the casing preferably has an inverted conical shape, and a cylindrical aromatic polycarbonate outlet is preferably provided at the lowermost portion.
- the upper part of the casing in the polymerization reaction zone has a cylindrical shape
- the tapered lower part of the casing has an inverted conical shape.
- the outlet is cylindrical
- the inner diameter D (cm) and length L (cm) of the upper part of the casing, the inner diameter d (cm) of the outlet, and the length h (cm) of the guide Preferably satisfies the following expression.
- the more preferable range of D (cm) is 150 ⁇ D ⁇ 900, and the more preferable range is 200 ⁇ D ⁇ 800.
- a more preferable range of D / d is 6 ⁇ D / d ⁇ 45, and further preferably 7 ⁇ D / d ⁇ 40.
- a more preferable range of L / D is:
- a high-quality, high-performance aromatic polycarbonate having high polymerization rate, no coloring, and excellent mechanical properties can be produced on an industrial scale for a long period of time.
- the exact reason for the stable production without any changes is not clear. However, the following can be considered as the reason why a high polymerization rate can be achieved at a high polymerization rate.
- the molten prepolymer of the raw material is led to the guide from the molten prevolimer supply port via the molten prevolimer supply zone and the distribution plate.
- the degree of polymerization increases while flowing down along the guide.
- the effective premixing is carried out along the guide while effective internal stirring and surface renewal are performed, and phenol and the like are effectively extracted, so that polymerization proceeds at a high speed.
- the adhesive force to the guide increases, and the amount of melt adhering to the guide increases toward the lower part of the guide.
- the melt is supplied continuously to the upper part of the guide, the melt is supplied continuously, so that the melt has the same melt viscosity and the degree of polymerization is higher.
- the lower end of the guide is also continuous to the tapered lower part of the casing. It will fall down.
- the aromatic polycarbonate having almost the same degree of polymerization generated while flowing down the guide is collected at the bottom of the tapered lower portion of the casing, and an aromatic polycarbonate having no variation in molecular weight can be continuously produced. It will be. This is one of the advantages of the polymerization apparatus used in the present invention.
- Aromatic polycarbonate collected at the bottom of the tapered lower portion of the casing passes through a discharge port, and is discharged by a discharge device (generally, a gear pump capable of sending a highly viscous substance; discharge pump 8 in Fig. 1). It is continuously extracted and usually drawn continuously through an extruder.
- a discharge device generally, a gear pump capable of sending a highly viscous substance; discharge pump 8 in Fig. 1). It is continuously extracted and usually drawn continuously through an extruder.
- the distribution plate constituting the guide contact falling polymerization apparatus used in the present invention is usually selected from a force such as a flat plate, a corrugated plate, or a plate having a thick central portion.
- a shape force such as a circle, an ellipse, a triangle, and a polygon is usually selected.
- the holes of the distribution plate are usually selected from shapes such as a circle, an ellipse, a triangle, a slit, a polygon, and a star.
- sectional area of the distributor plate holes is usually 0. 01: a LOOcm 2, preferably 0. 05 ⁇ : a is LOcm 2, range particularly preferably of 0. l ⁇ 5cm 2.
- the distance between the holes, which is the distance between the center and the center of the hole is usually l to 500 mm, preferably 25 to 100 mm.
- the hole of the distribution plate may be a hole penetrating the distribution plate or a case where a pipe is attached to the distribution plate. Moreover, it may be tapered.
- a guide that constitutes the guide contact-flow polymerization apparatus used in the present invention refers to a material having a very large ratio of the length of the horizontal section to the average length of the outer circumference of the cross section. Is represented. The ratio is usually in the range of 10 to: L, 000,000, preferably ⁇ is in the range of 50 to 100,000.
- the shape of the horizontal cross section of the guide is usually selected from shapes such as a circle, an ellipse, a triangle, a square, a polygon having five or more sides, and a star.
- the shape of the cross section may be the same or different in the length direction. Further, the guide may be hollow.
- the guide may be a single guide such as a wire-like guide, a thin rod-like guide, a thin guide in which the molten pre-bolimer does not enter inside, or a pipe-like guide. A plurality of combinations may be used. Further, it may be a net-like thing or a punching plate-like thing. Furthermore, the guide has a spiral horizontal cross section.
- the surface of the guide may be uneven or uneven, and may have some projections or the like.
- the guide is a cylindrical one such as a wire, a thin, or a rod, the thin one, a pipe-like one, a net-like one, or a punching plate-like one.
- Three-dimensional guides which are arranged at appropriate intervals above and below using horizontal support materials, for example, at a distance of lcm to 200 cm, or a plurality of wires or fine rods.
- This is a jungle gym-like solid guide that is fixed at appropriate intervals above and below, for example, 1 cm to 200 cm, using horizontal support materials at the front, rear, left and right of the pipe-shaped guide.
- the lateral support not only helps to keep the spacing between the guides approximately the same, but also helps to increase the strength of guides that are flat or curved as a whole, or that are three-dimensional. .
- These support members may be the same material as the guide, or may be different.
- one guide has a cylindrical shape with an outer diameter r (cm) or a pipe-like shape having a circular cross-section in which the molten pre-bollima does not enter (hereinafter, collectively referred to as a cylindrical shape).
- r satisfies the following equation.
- the guide according to the present invention promotes the polymerization reaction while flowing down the molten prepolymer, but also has a function of holding the molten prepolymer for a certain time.
- the holding time is related to the polymerization reaction time, and as the melt viscosity increases as the polymerization proceeds, the holding time and the holding amount increase as described above.
- the amount by which the guide retains the molten prepolymer depends on the external surface area of the guide with which the prepolymer is in contact, even at the same melt viscosity. Therefore, the amount depends on their outer diameter in the case of cylindrical guides.
- the guide installed in the guide contact-flow polymerization apparatus used in the present invention needs to have enough strength to support and hold the weight of the molten pre-polymer in addition to the weight of the guide itself. is there. In this sense, the thickness of the guide is important.
- the diameter (r) is preferably in the above range (0.1 to Lcm).
- the more preferable range of r is 0.15 ⁇ r ⁇ 0.8, and the more preferable range is 0.2 ⁇ r ⁇ 0.6.
- Such guides are preferred! / ⁇ Materials include metals such as stainless steel, carbon steel, Hastelloy, nickel, titanium, chromium, aluminum and other alloys, and heat resistant materials. High strength polymer materials are selected. Particularly preferred is stainless steel.
- the guide surface is subjected to various treatments such as plating, lining, passivation treatment, acid washing, phenol washing, etc. as necessary!
- the positional relationship between the guide and the distribution plate and the positional relationship between the guide and the holes of the distribution plate are not particularly limited as long as the molten prepolymer can flow down into the contact with the guide.
- the guide and the distributing plate are in contact with each other!
- the guide is provided corresponding to the hole of the distribution plate, but the present invention is not limited to this.
- Preferable examples of installing the guides corresponding to the holes of the distribution plate include (1) fixing the upper end of the guide to the upper inner wall surface of the polymerization apparatus or an appropriate position in the supply zone, and (2) Fixing the upper end of the guide to the periphery of the upper end of the hole of the distribution plate, and providing the guide with the guide passing through the hole of the distribution plate. Method, (3) a method of fixing the upper end of the guide to the lower surface of the distribution plate, and (4) a method of fixing by welding to a part of the hole of the distribution plate.
- a method of flowing down the molten prevolimer along the guide through the distribution plate a method of flowing down by the liquid head or its own weight, or by applying pressure using a pump or the like, the distribution plate force is also reduced by the molten plate. Extrusion and other methods can be used.
- a predetermined amount of the raw material molten prepolymer is supplied to the supply zone of the polymerization apparatus under pressure using a supply pump, and the molten prevolumemer guided to the guide via the distribution plate flows down along the guide by its own weight. This is the method.
- the present invention when a molten prepolymer obtained from an aromatic dihydroxy conjugate and a diaryl carbonate is polymerized by a guide contact falling polymerization apparatus, an aromatic polycarbonate is produced.
- the temperature of the polymerization reaction is usually in the range of 80 to 350 ° C. Since the polymerization apparatus used in the present invention also has a seal portion of a stirrer for mechanical stirring, leakage of air and the like is very small, so that the reaction temperature is higher than that of a conventional mechanically stirred polymerization apparatus. There is no need to raise the temperature to over 300 ° C.
- an aromatic monohydroxy conjugate for example, phenol
- the reaction rate is increased by removing this compound from the reaction system.
- an aromatic gas such as nitrogen, argon, helium, carbon dioxide, or a lower hydrocarbon gas, which does not adversely affect the reaction, is introduced into the polymerization apparatus to generate an aromatic monohydroxyl compound.
- an aromatic gas such as nitrogen, argon, helium, carbon dioxide, or a lower hydrocarbon gas, which does not adversely affect the reaction.
- nitrogen, argon, helium, carbon dioxide, or a lower hydrocarbon gas which does not adversely affect the reaction.
- a lower hydrocarbon gas which does not adversely affect the reaction
- the preferable reaction pressure in the polymerization zone in the present invention is a force that varies depending on the type and molecular weight of the aromatic polycarbonate to be produced, the polymerization temperature, and the like.
- the number-average molecular weight of the molten prepolymer is 5,000 or less, 400 to 3, OOOPa range power S is preferable, and if the number-average molecular weight power is 5,000 to 10,000, 50 to 500 Pa Is preferable.
- the number average molecular weight is 10,000 or more, it is preferably 300 Pa or less, and particularly preferably in the range of 20 to 250 Pa.
- an aromatic polycarbonate having a desired degree of polymerization with only one guide contact-flow polymerization apparatus.
- two or more guide contact-flow polymerization units are connected in series, and the above steps (I) and ()) are performed in each polymerization unit.
- the first contact polymerization type polymerization device, the second contact polymerization type polymerization device, the third contact polymerization type polymerization device, and the fourth contact polymerization type polymerization device are used in this order.
- the method of increasing the degree of integration if the total external surface area of the guides having the respective polymerization device powers is Sl, S2, S3, S4 ''-', then S1 ⁇ S2 ⁇ S3 ⁇ S4 ⁇ ---- can do.
- the polymerization temperature may be the same in each polymerization apparatus, or may be sequentially increased.
- the polymerization pressure can also be lowered in each polymerization zone.
- a more preferred range is 1.5 ⁇ S1 / S2 ⁇ 15.
- the aromatic hydroxy compound produced by the power polymerization reaction which produces 1 ton or more of aromatic polycarbonate per hour, is discharged out of the system.
- the raw material must be supplied to the polymerization equipment.
- the amount of the molten prepolymer to be supplied is a force that varies depending on the degree of polymerization and the degree of polymerization of the aromatic polycarbonate to be produced. 01 ⁇ 1.5 tons Zhr range.
- the reaction for producing an aromatic polycarbonate from an aromatic dihydroxy conjugate and diallyl carbonate can be carried out without adding a catalyst.
- a catalyst in order to increase the polymerization rate, the presence of a catalyst as necessary is required. Done below.
- the catalyst is not particularly limited as long as it is used in this field.
- Examples of the catalyst include lithium hydroxide, sodium hydroxide, potassium hydroxide and calcium hydroxide.
- Hydroxides of alkali metals and alkaline earth metals such as aluminum; alkali metal salts of hydrides of boron and aluminum such as lithium aluminum hydride, sodium borohydride and tetramethylammonium borohydride , Alkaline earth metal salts, quaternary ammonium salts; hydrogen compounds of alkali metals and alkaline earth metals such as lithium hydride, sodium hydride, calcium hydride; lithium methoxide, sodium ethoxide, calcium Alkoxides of alkali metals and alkaline earth metals such as dimethyl methoxide; alkali metals such as lithium phenoxide, sodium phenoxide, magnesium phenoxide, LiO—Ar—OLi, NaO—Ar—ONa (Ar is aryl group); Alkaline earth metal ally oxides; lithium acetate, calcium acetate,
- these catalysts When catalysts are used, these catalysts may be used alone or in combination of more than one species. They may be used together.
- the amount of these catalysts, the aromatic dihydroxy I spoon compounds of the raw materials, usually 10 _1 ° to 1 wt%, preferably ⁇ - 9 ⁇ _1 wt%, more preferably 10- 8 to : LO- 2 is in the range of weight 0/0.
- the polymerization catalyst used remains in the aromatic polycarbonate of the product, but these polymerization catalysts usually have many adverse effects on the physical properties of the polymer. Therefore, it is preferable to reduce the amount of the catalyst used as much as possible. In the method of the present invention, the amount of the catalyst used can be reduced because the polymerization can be carried out efficiently. This is also one of the advantages of the present invention that can produce a high-quality aromatic polycarbonate.
- the material of the guide contact-flow polymerization apparatus and piping used in the present invention There is no particular limitation on the material of the guide contact-flow polymerization apparatus and piping used in the present invention. Usually, stainless steel, carbon steel, hastelloy, nickel, titanium, chromium, and other alloys Metals, high heat-resistant polymer materials, etc. In addition, the surface of these materials may be subjected to various treatments such as plating, lining, passivation treatment, acid washing, and phenol washing as necessary. Particularly preferred are stainless steel, nickel, glass lining and the like.
- the aromatic polycarbonate produced by the method of the present invention has a repeating unit represented by the following formula.
- aromatic polycarbonate containing 85 mol% or more of the repeating units represented by the following formula in all the repeating units.
- the terminal group of the aromatic polycarbonate produced by the method of the present invention usually has a hydroxyl group or an aryl carbonate group represented by the following formula.
- Ar 5 is the same as Ar 3 and Ar 4 described above.
- the ratio of the hydroxy group to the aryl carbonate group is not particularly limited, but is usually from 95: 5 to 5: 9 5, preferably in the range of 90:10 to: LO: 90, more preferably in the range of 80:20 to 20:80.
- Particularly preferred are aromatic polycarbonates in which the proportion of the phenolic carbonate groups in the terminal groups is at least 85 mol%.
- the aromatic polycarbonate produced by carrying out the method of the present invention contains a plurality of aromatic polycarbonate main chains, and the plurality of aromatic polycarbonate main chains as a whole are an ester bond and an ether. It may be partially branched by bonding to at least one side chain via one kind of hetero bond selected from the group consisting of bonding agents.
- the amount of the heterogeneous bond is usually 0.005 to 2 mol%, preferably 0.01 to 1 mol%, more preferably, to the carbonate bond in a plurality of aromatic polycarbonate main chains.
- Shiino is 0.05 to 0.5 mol 0/0.
- Such a heterogeneous bond in an amount improves the flow characteristics during melt molding without deteriorating the physical properties of other polymers, so that it is suitable for precision molding, and can be molded even at a relatively low temperature.
- a molded article having excellent performance can be manufactured. The molding cycle can be shortened and energy can be saved during molding.
- the aromatic polycarbonate produced by the method of the present invention contains almost no impurities, but contains at least one metal compound selected from the group consisting of alkali metal compounds and alkaline earth metal compounds. It is possible to produce an aromatic polycarbonate having an amount of 0.001 to lppm in terms of the total amount of alkali metal atoms and alkaline earth metal atoms. Preferably, this content is between 0.005 and 0.5 ppm, more preferably between 0.01 and 0.1 ppm.
- the content of such a metal element is lppm or less, preferably 0.5ppm or less, more preferably 0.1ppm or less, it does not affect the physical properties of the product aromatic polycarbonate.
- the aromatic polycarbonate produced is of high quality.
- aromatic polycarbonates produced by the method of the present invention particularly preferred are a halogen-free high-purity aromatic dihydroxy conjugate and a halogen-free high-purity diaryl carbonate. It is produced by using the compound and usually has a halogen atom content of lOppb or less. In the method of the present invention, an aromatic polycarbonate having a halogen atom content of 5 ppb or less can be produced. Aromatic polycarbonates with lppb or less can be produced, resulting in very high quality products.
- the method of the present invention can stably produce an aromatic polycarbonate having no difference in molecular weight for a long time because a specific polymerization apparatus is used. It is.
- GPC Gel permeation chromatography
- hetero bond The amount of at least one hetero bond selected from the group consisting of ester bond and ether bond (hereinafter, simply referred to as "hetero bond”) was measured by the method described in WO 97Z32916.
- An aromatic polycarbonate was produced using a guide contact falling polymerization apparatus as shown in FIG.
- the material of the polymerization apparatus is stainless steel except for the aromatic polycarbonate discharge pump 8.
- 0 molten polymer supplied from the supply port 1 is uniformly distributed to each guide 4 by the distributor plate 2.
- An inert gas supply port 9 is provided at the lower part of the polymerization apparatus, and a vacuum vent port 6 is provided at the upper part.
- the outside of the polymerization equipment is a jacket, which is heated to 260 ° C with a heating medium.
- the produced aromatic polycarbonate which has fallen from the lower part of the guide 4 to the tapered lower part 11 of the polymerization apparatus casing, is discharged from the discharge port 7 to 5.5 ton Zhr by the discharge pump 8 so that the amount at the bottom is substantially constant. It was continuously withdrawn at a flow rate.
- the outlet after 60 hours, 100 hours, 500 hours, 1,000 hours, 2,000 hours, 3,000 hours, 4,000 hours, and 5,000 hours from the start of operation The number average molecular weight Mn of the aromatic polycarbonate extracted from 12 was 10, 500, 10, 550, and 1 respectively. 0, 500, 10, 550, 10, 500, 10, 500, 10, 550, and 10, 500, which were stable. When these aromatic polycarbonates were formed into a film, very high molecular weight polymer lump (usually having a diameter of 1 mm or less, which can be visually confirmed by the difference in refractive index from other parts) was present. Did not.
- the content of the alkali metal and the Z or alkaline earth metal compound in the aromatic polycarbonate thus produced is 0.04 to 0.05 ppm in terms of these metal elements,
- the content of halogen atoms (chlorine atoms) was less than lppb.
- the content of the heterogeneous bond was 0.12 to 0.15 mol%.
- the number average molecular weight Mn of the aromatic polycarbonate discharged by 12 forces was 7,600, 7,600, 7,650, 7,600, 7,650, 7,650, 7,600, 7,600, respectively. Yes, it was stable. When these aromatic polycarbonates were formed into a film, no very high molecular weight polymer lump (which could be visually confirmed by the difference in refractive index from other portions) was not present.
- the content of the alkali metal and the Z or alkaline earth metal compound in the aromatic polycarbonate thus produced is 0.03 to 0.04 ppm in terms of these metal elements,
- the content of halogen atoms (chlorine atoms) was less than lppb.
- the content of the heterogeneous bond was 0.08 to 0.1 mol%.
- the water was continuously extracted from the outlet 7 at a constant flow rate by the discharge pump 8 so as to be almost constant.
- This molten prepolymer was continuously supplied to the supply zone 3 from the supply port 1 of the second polymerization apparatus by a supply pump (the same as the discharge pump 8 of the first polymerization apparatus).
- the molten prevolimer continuously supplied to the polymerization reaction zone 5 through the distribution plate 2 in the second polymerization apparatus flowed down along the guide 4, and the polymerization reaction proceeded.
- the polymerization reaction zone of the second polymerization apparatus is maintained at a pressure of 50 Pa through the vacuum vent port 6.
- the produced aromatic polycarbonate which has fallen from the lower part of the guide 4 to the tapered lower part 11 of the casing of the second polymerization apparatus, is discharged from the discharge port 7 to 7 tonnes by the discharge pump 8 so that the amount at the bottom is substantially constant. It was continuously withdrawn at a flow rate.
- the number average molecular weights Mn of the aromatic polycarbonate extracted from 12 are 11,500, 11,550, 11,500, 11,550, 11,500, 11,500, 11,550, 11,500, respectively. And was stable. When these aromatic polycarbonates were formed into a film, no very high molecular weight polymer lump (which could be visually confirmed by the difference in refractive index from other parts) was found o.
- the content of the alkali metal and the Z or alkaline earth metal compound in the aromatic polycarbonate thus produced is 0.03 to 0.05 ppm in terms of these metal elements,
- the content of halogen atoms (chlorine atoms) was less than lppb.
- the content of the heterogeneous bond was 0.11 to 0.16 mol%.
- a molten prepolymer of an aromatic polycarbonate obtained by reacting an aromatic dihydroxy conjugate with diallyl carbonate is prepared by using a guide contact falling polymerization apparatus having a specific structure.
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Description
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Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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AU2005252555A AU2005252555B2 (en) | 2004-06-14 | 2005-06-14 | Improved process for producing aromatic polycarbonate |
US10/592,523 US7479258B2 (en) | 2004-06-14 | 2005-06-14 | Method for producing an aromatic polycarbonate |
CN2005800128697A CN1946763B (zh) | 2004-06-14 | 2005-06-14 | 生产芳族聚碳酸酯的改进方法 |
EA200601815A EA012117B1 (ru) | 2004-06-14 | 2005-06-14 | Улучшенный способ получения ароматического поликарбоната |
EP05751554.6A EP1760109B1 (en) | 2004-06-14 | 2005-06-14 | Improved process for producing aromatic polycarbonate |
BRPI0509998A BRPI0509998B1 (pt) | 2004-06-14 | 2005-06-14 | método para produzir um policarbonato aromático, e, policarbonato aromático |
CA002560029A CA2560029A1 (en) | 2004-06-14 | 2005-06-14 | Improved method for producing an aromatic polycarbonate |
JP2006514602A JP4181600B2 (ja) | 2004-06-14 | 2005-06-14 | 芳香族ポリカーボネートの改良された製造方法 |
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JP2004176204 | 2004-06-14 | ||
JP2004-176204 | 2004-06-14 |
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WO2005121210A1 true WO2005121210A1 (ja) | 2005-12-22 |
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US (1) | US7479258B2 (ja) |
EP (1) | EP1760109B1 (ja) |
JP (1) | JP4181600B2 (ja) |
KR (1) | KR100813450B1 (ja) |
CN (1) | CN1946763B (ja) |
AU (1) | AU2005252555B2 (ja) |
BR (1) | BRPI0509998B1 (ja) |
CA (1) | CA2560029A1 (ja) |
EA (1) | EA012117B1 (ja) |
WO (1) | WO2005121210A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1760108A1 (en) * | 2004-06-16 | 2007-03-07 | Asahi Kasei Chemicals Corporation | Polymerization apparatus for producing aromatic polycarbonate |
WO2008065776A1 (fr) * | 2006-11-27 | 2008-06-05 | Asahi Kasei Chemicals Corporation | Procédé de fabrication industrielle de polycarbonate aromatique haute qualité |
WO2008065874A1 (fr) * | 2006-11-28 | 2008-06-05 | Asahi Kasei Chemicals Corporation | Procédé de fabrication d'un polycarbonate aromatique de qualité élevée à l'échelle industrielle |
WO2012005250A1 (ja) | 2010-07-08 | 2012-01-12 | 旭化成ケミカルズ株式会社 | 分岐ポリカーボネート |
WO2012056903A1 (ja) | 2010-10-29 | 2012-05-03 | 旭化成ケミカルズ株式会社 | 縮重合反応性ポリマーの製造方法、並びに重合器 |
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KR100898536B1 (ko) * | 2004-10-14 | 2009-05-20 | 아사히 가세이 케미칼즈 가부시키가이샤 | 고순도 디아릴카보네이트의 제조 방법 |
US20070208159A1 (en) * | 2006-03-02 | 2007-09-06 | General Electric Company | Poly(arylene ether) block copolymer compositions, methods, and articles |
EP2428266B1 (en) | 2010-09-10 | 2013-07-10 | Princo Middle East FZE | Process for preparation of high viscosity polymeric materials |
WO2015141501A1 (ja) * | 2014-03-19 | 2015-09-24 | 旭化成ケミカルズ株式会社 | 縮重合反応性ポリマー及びその製造装置 |
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EP1760108A1 (en) * | 2004-06-16 | 2007-03-07 | Asahi Kasei Chemicals Corporation | Polymerization apparatus for producing aromatic polycarbonate |
EP1760108A4 (en) * | 2004-06-16 | 2010-11-03 | Asahi Kasei Chemicals Corp | POLYMERIZATION APPARATUS FOR PRODUCING AROMATIC POLYCARBONATE |
WO2008065776A1 (fr) * | 2006-11-27 | 2008-06-05 | Asahi Kasei Chemicals Corporation | Procédé de fabrication industrielle de polycarbonate aromatique haute qualité |
JP5320071B2 (ja) * | 2006-11-27 | 2013-10-23 | 旭化成ケミカルズ株式会社 | 高品質芳香族ポリカーボネートの工業的製造法 |
WO2008065874A1 (fr) * | 2006-11-28 | 2008-06-05 | Asahi Kasei Chemicals Corporation | Procédé de fabrication d'un polycarbonate aromatique de qualité élevée à l'échelle industrielle |
JP5344927B2 (ja) * | 2006-11-28 | 2013-11-20 | 旭化成ケミカルズ株式会社 | 高品質芳香族ポリカーボネートを工業的規模で製造する方法 |
WO2012005250A1 (ja) | 2010-07-08 | 2012-01-12 | 旭化成ケミカルズ株式会社 | 分岐ポリカーボネート |
US8784963B2 (en) | 2010-07-08 | 2014-07-22 | Asahi Kasei Chemicals Corporation | Branched polycarbonate |
WO2012056903A1 (ja) | 2010-10-29 | 2012-05-03 | 旭化成ケミカルズ株式会社 | 縮重合反応性ポリマーの製造方法、並びに重合器 |
US9321884B2 (en) | 2010-10-29 | 2016-04-26 | Asahi Kasei Chemicals Corporation | Process for producing polycondensation polymer, and polymerizer |
EP3339349A1 (en) | 2010-10-29 | 2018-06-27 | Asahi Kasei Kabushiki Kaisha | Grid used in a process for producing polycondensation polymer |
Also Published As
Publication number | Publication date |
---|---|
US7479258B2 (en) | 2009-01-20 |
KR100813450B1 (ko) | 2008-03-13 |
EA200601815A1 (ru) | 2007-02-27 |
BRPI0509998B1 (pt) | 2016-06-21 |
EP1760109A4 (en) | 2010-11-03 |
EA012117B1 (ru) | 2009-08-28 |
JPWO2005121210A1 (ja) | 2008-04-10 |
CN1946763A (zh) | 2007-04-11 |
US20070197763A1 (en) | 2007-08-23 |
CA2560029A1 (en) | 2005-12-22 |
BRPI0509998A (pt) | 2007-10-16 |
KR20070012687A (ko) | 2007-01-26 |
CN1946763B (zh) | 2011-01-19 |
EP1760109B1 (en) | 2014-07-09 |
AU2005252555A1 (en) | 2005-12-22 |
EP1760109A1 (en) | 2007-03-07 |
AU2005252555B2 (en) | 2007-11-01 |
JP4181600B2 (ja) | 2008-11-19 |
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